OngoingAI

Invoice9 usage & market intelligence

Pricing
Free plan available
FreeFree
  • • 50 invoices/month
  • • ZUGFeRD, XRechnung, Factur-X, PEPPOL
  • • VIES VAT validation
  • • PDF email delivery
  • • Google Drive auto-sync
Pro$10/month

14-day free trial

  • • 500 invoices/month
  • • Everything in Free
  • • Priority support
Business$25/month

14-day free trial

  • • Unlimited invoices/month
  • • Everything in Pro
  • • High-volume stores & agencies
What does Invoice9 do?

Invoice9 automatically generates EU-compliant invoices for every Shopify order. It detects the buyer's country, selects the correct format (ZUGFeRD...

  • ZUGFeRD, Factur-X & PEPPOL: auto-detect buyer country, generate correct format
  • Credit notes, multi-language, VIES VAT validation, reverse charge, Google Drive sync
  • Auto e-invoice on every order — sequential numbering, branded PDF/A-3 with XML

Features

Invoices and receiptsInvoicesCredit notesPacking slipsBrandingInvoice numbersTemplatesLogosEmail automationPDF generationPrint and export
Review history
Daily review count on the Shopify App Store
0±0 · 29d· Rating steady at 0.0★
Aug 17Sep 14

Daily tracking from Aug 10, 2026 through today · 29 days observed · sign up free for the full history →

Catalog position
Within Invoices and receipts on the App Store
Rank by reviews
#347 of 423
Review percentile
18th
Rating percentile
56th
On the App Store
0.3 yrs
Works with
Integrations listed for Invoice9
CheckoutCustomer accountsShopify FlowShopify AdminGoogle DrivePEPPOL Network
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Frequently asked questions

Invoice9 automatically generates EU-compliant invoices for every Shopify order. It detects the buyer's country, selects the correct format (ZUGFeRD... It's a invoices and receipts tool for ecommerce stores.